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Last edited 13 Aug 2017
The Building Regulations define thermal elements as:
|...a wall, floor or roof (but does not include windows, doors, roof windows or roof-lights) which separates a thermally conditioned part of the building (“the conditioned space”) from—
(a) the external environment (including the ground); or
(b) in the case of floors and walls, another part of the building which is—
(iii) where this paragraph applies, conditioned to a different temperature,
and includes all parts of the element between the surface bounding the conditioned space and the external environment or other part of the building as the case may be.
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